US5828470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color values processing apparatus capable of optimizing a processing description
Assignee: Fujifilm Business Innovation Corp
•
Filing: 1997-04-24
•
Granted: 1998-10-27
•
Expires: 2017-04-24
Abstract
Abstract A color values processing description which represents a procedure of color values processing is analyzed by use of a partial reservation table and a total reservation table. The color values processing description is changed based on results of the analysis. For example, two consecutive operations of the same type, such as normalizing operations, gamma correcting operations or look-up table referencing operations, are unified into a single operation.
Inventors
- 👤 Masahiro Maeda
- 👤 Noriaki Seki
- 👤 Masayuki Kurahashi
- 👤 Toshiyuki Tsuzuki
- 👤 Toru Yamasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:35
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6027
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A color values processing apparatus comprising: means for storing a color values processing description that defines a procedure of color values conversion between color processing systems; means for analyzing the stored color values processing description, to thereby detect a type of a particular procedure in the stored color values processing description, wherein the type includes at least one of the following: normalization, gamma correction, log correction, LUT referencing, and a matrix operation; means for changing the particular procedure in accordance with the detected type to perform at least one of normalization, gamma correction, log correction, LUT referencing and a matrix operation; and means for converting color values of a first color processing system to color values of a second color processing system by using the color values processing description including the changed procedure.
Claim 2
Dependent Claim
133 words
A color values processing apparatus comprising: means for storing a color values processing description that defines a procedure of color values conversion between color processing systems; means for analyzing the stored color values processing description, to thereby detect a type of a particular procedure in the stored color values processing description, wherein the type includes at least one of the following: normalization, gamma correction, log correction, LUT referencing, and a matrix operation; means for changing the particular procedure in accordance with the detected type to perform at least one of normalization, gamma correction, log correction, LUT referencing and a matrix operation; and means for converting color values of a first color processing system to color values of a second color processing system by using the color values processing description including the changed procedure.
Claim 3
Dependent Claim
33 words
The color values processing apparatus of claim 1, wherein the changing means comprises means for converting a plurality of consecutive operations of the same type included in the procedure to a single operation.
Claim 4
Dependent Claim
24 words
The color values processing apparatus of claim 2, wherein the converting means converts a plurality of consecutive normalizing operations to a single normalizing operation.
Claim 5
Dependent Claim
26 words
The color values processing apparatus of claim 2, wherein the converting means converts a plurality of consecutive gamma correcting operations to a single gamma correcting operation.
Claim 6
Dependent Claim
28 words
The color values processing apparatus of claim 2, wherein the converting means converts a plurality of consecutive look-up table referencing operations to a single look-up table referencing operation.
Claim 7
Dependent Claim
24 words
The color values processing apparatus of claim 2, wherein the converting means converts the procedure to a single multi-dimensional direct look-up table referencing operation.
Claim 8
Dependent Claim
52 words
The color values processing apparatus of claim 1, further comprising: a rounding process unit including: means for storing ranges of the color values; means for storing data indicating a rounding operation to be performed when the color value exceeds the range; and means for performing the rounding operation indicated by the data.
Claim 9
Dependent Claim
51 words
The color values processing apparatus of claim 1, further comprising: means for judging whether the procedure is performed on a real number; and means for changing the procedure so that it is performed on an integer when the judging means has judged that the procedure is performed on a real number.
Claim 10
Dependent Claim
35 words
The color values processing apparatus of claim 1, wherein the changing means comprises means for storing costs of operations included in the procedure, and means for selecting conversions of the operations based on the costs.
Claim 11
Dependent Claim
27 words
The color values processing apparatus of claim 1, further comprising means for combining a plurality of color values processing descriptions into a single color values processing description.
Claim 12
Dependent Claim
30 words
The color values processing apparatus according to claim 1, wherein the color values of the first and second color values processing systems are color values of pixels of raster data.
References Cited (Backward Citations)
US4679074A
Cited
EP0179334A2
Cited
US5065234A
Cited
US4956704A
Cited
US5073818A
Cited
US4885705A
Cited
US5155587A
Cited
US5121198A
Cited
WO1992006557A1
Cited
US5208911A
Cited
US5265200A
Cited
EP0486311A2
Cited
US5200816A
Cited
US5289295A
Cited
US5295204A
Cited
USH1506H
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-26 | 2002-04-27 | 2002-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-26 | 2006-04-27 | 2006-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-26 | 2010-04-27 | 2010-10-27 | $7700.00 | Window Closed / Lapsed |